Gelest, Inc.
GELEST, INC.
11 East Steel Rd. Morrisville, PA 19067
Phone: (215) 547-1015
MATERIAL SAFETY
DATA SHEET
EMERGENCY TELEPHONE
CHEMTREC: 1-800-424-9300
NAME USED ON LABEL: Gelest® OE 46.2 2-part Silicone Optical Encapsulant - PP2-OE46.2
CHEMICAL NAME: VINYL MODIFIED POLY(DIMETHYLSILOXANE) copolymer,
with (part B) HYDRIDE FUNCTIONAL CROSSLINKER
SYNONYMS: 2-PAT SILICONE ELASTOMER
CHEMICAL FAMILY: SILICONE
HMIS CODES HEALTH: 1 FLAMMABILITY: 1 REACTIVITY: 0
INGREDIENTS
IDENTITY
CAS NO.
% TL
PHENYL(CHLOROPHENYL)SILOXANE - DIMETHYLSILOXANE COPOLYMER,
VINYLDIMETHYLSILOXANE TERMINATED 1627113-90-9 >97 not established
Part A contains the following additional component
SILICON DIOXIDE, AMORPHOUS, HEXAMETHYLDISILAZANE TREATED
68909-20-6 / 7631-86-9 20-30 not established
Part B contains the following additional component
polyPHENYL(DIMETHYLHYDROSILOXY)SILOXANE, HYDRIDE TERMINATED
68952-30-7
<10 not established
OSHA PEL
not established
not established
not established
PHYSICAL DATA
Boiling Point: >205°C
Specific Gravity: 1.22
Vapor Density, air = 1: NA
% volatiles:NA
Molecular Weight: NA (mixture)
Appearance & Color: Clear liquid
Melting Point: <-60°C
Vapor Pressure, 20°: <1mm
Solubility in water: insoluble
Evaporation rate: NA
Viscosity: 1000-4000 cSt.
FIRE & EXPLOSION DATA
Flash Point, COC: 220°C (428°F)
Autoignition Temp.: not determined
Flammability Limits- LEL: NA UEL: NA
Extinguishing Media: Water spray or fog, foam, carbon dioxide, dry chemical.
Special Fire Fighting Procedures: Avoid eye and skin contact. Do not breathe fumes or inhale vapors.
Unusual Fire and Explosion Hazards: Irritating fumes and organic acid vapors may develop when
material is exposed to elevated temperatures or open flame.
-1-(PP2-OE46.2)
Abbreviations: ND: Not Determined, No Data; NA: Not Applicable;
LD: Lethal Dose, LC: Lethal Concentration; H: hour; °: °C unless
otherwise stated; mm: millimeters Hg, torr; PEL: permissible exposure level; TWA: time weighted average;
TLV: threshold limit value; HMIS: Hazardous Material information System; CAS No.: Chemcial Abstract Service Registration Number
Gelest, Inc. © 2008
Gelest, Inc.
ENVIRONMENTAL INFORMATION
Spill response: Sweep material and transfer to a suitable container for disposal.
Recommended Disposal: Incinerate. Follow all chemical pollution control regulations.
HEALTH HAZARD DATA
Eye Contact: May cause immediate or delayed severe eye irritation.
Skin contact: A single relatively short exposure causes no adverse effect. Several or prolonged
exposures may cause mild irritation. Avoid Contact.
Inhalation: No information available. Avoid inhalation.
Oral Toxicity: not determined
Inhalation Toxicity: not determined
SUGGESTED FIRST AID
EYES: In case of contact, immediately flush eyes with flowing water for at least 15 minutes. Get
medical attention.
SKIN: Flush with water, then wash with soap and water.
INHALATION: Move exposed individual to fresh air. Administer oxygen if needed. Call a physician.
INGESTION: Never give fluids or induce vomiting if patient is unconscious or having convulsions. To
conscious individual give one full cup of water to dilute ingested material. Get medical attention.
REACTIVITY DATA
Stability: Stable in sealed containers under dry inert atmosphere.
Conditions to avoid: Store away from alkalis, oxidizers, metal salts, precious metals.
Hazardous decomposition products: Organic acid vapors and silicon dioxide.
SPECIAL PROTECTION INFORMATION
Ventilation: Local exhaust is recommended. Mechanical is recommended.
Respiratory Protection: If exposure exceeds TLV, NIOSH approved organic vapor respirator.
Eye and Face Protection: Chemical worker’s goggles. Do not wear contact lenses.
Other Clothing and Equipment: Rubber, neoprene or nitrile gloves. An eyewash and emergency shower
should be available. Launder clothing before reuse.
-2-(PP2-OE46.2)
Abbreviations: ND: Not Determined, No Data; NA: Not Applicable; LD: Lethal Dose, LC: Lethal Concentration; H: hour; °: °C unless
otherwise stated; mm: millimeters Hg, torr; PEL: permissible exposure level; TWA: time weighted average;
TLV: threshold limit value; HMIS: Hazardous Material information System; CAS No.: Chemcial Abstract Service Registration Number
Gelest, Inc. © 2008
Gelest, Inc.
OTHER PRECAUTIONS
For research and industrial use only.
Storage and Handling: Store in sealed containers.
TRANSPORTATION
DOT SHIPPING NAME: CHEMICALS, NOI
DOT HAZARD CLASS: None required
DOT LABEL: None required
DOT ID No: None required
Prepared by safety and environmental affairs
MSDS ISSUE DATE PP2-OE46.2: 1/13/15
SUPERSEDES: 12/4/14
The information contained in this document has been gathered from reference materials and/or Gelest, Inc. test data and is to
the best knowledge and belief of Gelest, Inc. accurate and reliable. Such information is offered solely for your consideration,
investigation and verification. It is not suggested or guaranteed that the hazard precautions or procedures described are the
only ones which exist. Gelest, Inc. makes no warranties, express or implied, with respect to the use of such information and
assumes no responsibility therefore. Information on this safety data sheet is not intended to constitute a basis for product
specifications.
-3-(PP2-OE46.2)
© 2015 Gelest Inc. Morrisville, PA 19067
Abbreviations: ND: Not Determined, No Data; NA: Not Applicable; LD: Lethal Dose, LC: Lethal Concentration; H: hour; °: °C unless
otherwise stated; mm: millimeters Hg, torr; PEL: permissible exposure level; TWA: time weighted average;
TLV: threshold limit value; HMIS: Hazardous Material information System; CAS No.: Chemcial Abstract Service Registration Number
Gelest, Inc. © 2008